Hello,
I'm struggling to setup SA/Pylons for a multidatabase env without much
luck.
As far as I understand, I need a session per database. In Pylons, I get
it "for free" via session_context binding. In other words, I have setup
a session_context object for each of the database I need to work with.
>>> db.get_db_session('blog')
<sqlalchemy.orm.session.Session object at 0xb7337a8c>
>>> db.get_db_session('cdb')
<sqlalchemy.orm.session.Session object at 0xb720f7ec>
Nevertheless, it is not usable:
>>> model.blog_wp_posts_tbl.count().execute()
Traceback (most recent call last):
File "<console>", line 1, in ?
File "build/bdist.linux-i686/egg/sqlalchemy/sql.py", line 474, in
execute
File "build/bdist.linux-i686/egg/sqlalchemy/sql.py", line 411, in
execute
except Exception ,e:
InvalidRequestError: This Compiled object is not bound to any engine.
I suppose my metadata setup is wrong. Currently it looks like this:
"""
blog_meta = DynamicMetaData()
blog_wp_posts_tbl = Table('wp_posts', blog_meta,
Column('ID', Integer, primary_key=True),
Column('guid', String(255)),
Column('post_author', Integer, ForeignKey('wp_users.ID'),
nullable=False),
Column('post_content', Unicode),
)
"""
Do I need to use separate DynamicMetaData() for each db conn? Do I need
to connect single metadata to the correct session? SA docs shows how to
connect metadata to a engine but all I have is a session.
Max.
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